Earth’s crust looks solid from the surface, but it is broken into a shifting mosaic of slabs that slowly rearrange oceans and ...

Two enormous structures that sit at the border between the Earth's mantle and its core have puzzled scientists for decades.

Scientists have discovered a meteorite older than Earth, offering the earliest clues to how the Solar System formed and how ...

Discover how scientists have used iron isotopes to determine the likely origin of the Mars-sized planet named Theia.

When a meteor streaks across the sky, it's not just beautiful. It's nature's way of delivering a time capsule to Earth.

No one is exactly sure how the tectonic plates formed, but one theory posits that the were shattered from within by the ...